QA1 10HTSP600 High Travel Tapered Pigtail Coil Spring 10 Inch 600 lb/in

The QA1 10HTSP600 is a high-performance tapered coil-over spring featuring a pigtail end design with a 10-inch free length and 600 lb/in spring rate. This spring features a 3.57-inch upper inside diameter that tapers down, making it ideal for QA1 Pro Coil suspension systems and coil-over conversions.

Key Features:

• Chrome silicon steel construction with silver powder coat finish
• Manufactured from high-tensile chrome silicon alloy spring wire for reduced coil count and smaller wire diameter
• Lighter weight design with increased travel due to larger coil spacing
• Cold wound, heat treated, and shot peened for maximum durability
• Ground squared ends for straight, consistent operation
• Clearly marked with free length and spring rate for easy identification
• Pigtail end design for specific coil-over applications
• Made in the USA

These lighter springs reduce unsprung weight and react faster, optimizing suspension performance. The high-grade material and careful heat-treating provide greatly improved fatigue life, and the coil design allows compression to coil-bind without affecting spring rate or free height. All QA1 springs are lifetime guaranteed to remain within 2% of the original free height and rate under normal operating conditions.